Powertrain
generic / SAE
P2776
Upshift Switch Circuit Low
Voltage on the upshift switch line is below the expected window. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number7 / 76
Possible causes
- Switch wire shorted to ground high
- Switch stuck in pressed position medium
- Connector pins corroded - high contact resistance low
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 60–400 €
- Estimated time: 0.5–2 h
- Component: upshift switch
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012